feat(audit): add authentication method tracking in audit logs

controller/audit.go

@@ -68,9 +68,17 @@ func auditOperatorInfo(c *gin.Context) map[string]interface{} {
 		"admin_id":       c.GetInt("id"),
 		"admin_username": c.GetString("username"),
 		"admin_role":     c.GetInt("role"),
+		"auth_method":    auditAuthMethod(c),
 	}
 }
 
+func auditAuthMethod(c *gin.Context) string {
+	if c.GetBool("use_access_token") {
+		return "access_token"
+	}
+	return "session"
+}
+
 // markAuditLogged 标记当前请求已在 handler 内手动记录审计日志，
 // 使鉴权链路中的审计兜底（finishAdminAudit）跳过兜底记录，避免重复。
 func markAuditLogged(c *gin.Context) {